SMCJ18A Littelfuse Inc, SMCJ18A Datasheet - Page 3

• Manufacturer Part Number: SMCJ18A
• Description: DIODE TVS 18V 1500W UNI 5% SMC
• Manufacturer: Littelfuse Inc
• Series: SMCJr

Specifications of SMCJ18A

• Voltage - Reverse Standoff (typ): 18V
• Voltage - Breakdown: 20V
• Power (watts): 1500W
• Polarization: Unidirectional
• Mounting Type: Surface Mount
• Package / Case: DO-214AB, SMC
• Reverse Stand-off Voltage Vrwm: 18V
• Breakdown Voltage Range: 20V To 22.1V
• Clamping Voltage Vc Max: 29.2V
• Diode Configuration: Unidirectional
• Peak Pulse Current Ippm: 51.4A
• Diode Case Style: DO-214AB
• Lead Free Status / RoHS Status: Lead free by exemption / RoHS Compliant
• Other names: SMCJ18ALFTR

©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to http://www.Littelfuse.com/series/SMCJ.html for current information.
Ratings and Characteristic Curves
Figure 1 - Peak Pulse Power Rating
Figure 3 - Pulse Waveform
Figure 5 - Steady State Power Dissipation Derating
150
100
50
Curve
0
0
t d
t r =10μsec
T
Peak Value
I PPM
1.0
t-Time (ms)
Half Value
I PPM
2.0
( )
I PPM
10/1000μsec. Waveform
as defined by R.E.A
2
T J =25°C
Pulse Width(td) is defined
as the point where the peak
current decays to 50% of I PPM
(T
A
=25°C unless otherwise noted)
3.0
Transient Voltage Suppression Diodes
Surface Mount – 1500W > SMCJ series
4.0
Revision: November 13, 2009
Figure 2 - Pulse Derating Curve
Figure 4 - Typical Junction Capacitance
Figure 6 - Maximum Non-Repetitive Peak Forward
Surge Current Uni-Directional Only
SMCJ Series